Algae Problems

Why Do Spas Need Periodic Draining

Chemical by-products quickly build up in a spa and make it difficult to balance the water after continued use. Periodically draining the spa and refilling it with fresh water will keep the water Perfect.

HOW OFTEN:
This depends on the size of the spa and the number of spa bathers. You should typically totally drain and refill with fresh water based upon the following formula:

Gallons divided by 3 divided by the maximum daily bathers equals the days between draining.

For example:

Based upon a maximum bather load of 2 bathers per day in a 500 gallon spa, you would need to completely drain the spa every 83 days.

AFTER YOU DRAIN:

Refill the spa with fresh water, Shock, circulate for 4 hours then retest and rebalance all chemicals.

Perfect Pool and Spa Software! Users: Test water and input all results into the main screen. Follow recommendations. See Personal Maintenance Schedule for prevention.